Building mobile products that scale
I'm aMobile Engineer
I build mobile products — and lead the teams that ship them.
11+ years across fintech, BNPL, and consumer products at scale — from individual contributor to engineering manager, still hands-on with the code.
Harsh Mittal
Currently
EM-1 @ Tamara
Riyadh, KSA · 4-developer team
01 · About
Engineering Manager who still reads stack traces at 2am — and sits in planning meetings making the delivery call.
11+ years across fintech, BNPL, MediaTech, and HealthTech, serving 5M+ users. Ran Android engineering at Jio — India's largest telecom — on a meet app operating at national scale. Now leads the Remittance team at Tamara, owning PRDs, RFCs, and ERDs end to end.
0+
Years experience
0M+
Users served
0%+
Crash-free sessions
Education
SVKM's NMIMS
Postgraduate Degree, Information Technology · 2020 – 2022
Uttar Pradesh Technical University
B.Tech, Computer Science · 2010 – 2014
Certifications
Data Scientist / Data Analytics Certificate
Simplilearn · 2026
02 · Leadership
Scope & ownership
—Leads the Remittance team at Tamara — 4 developers, reporting to a Senior EM.
—Owns PRDs, RFCs, and ERDs end to end: writes them, breaks into tasks, drives execution.
—Runs sprint planning, code review, and technical decision-making under deadline pressure.
—EM track record started at Jio, running Android engineering on a national-scale product.
—Brings AI tooling into team workflow deliberately, for team delivery speed — not just personal output.
03 · Experience
Nine roles, one thread: shipping money-movement software.
May 2025 – Present
Senior Product Engineer, Mobile · Tamara
Riyadh, Saudi Arabia · Hybrid
Led end-to-end Flutter migration of core app modules using AI-assisted tooling (GitHub Copilot, Claude AI), cutting migration effort and code review cycles.
Owns architecture and delivery of the Current Account module — top-up, withdrawal, P2P transfer, wallet — on a live production BNPL platform.
Manages and mentors a cross-functional mobile team, running code reviews, sprint planning, and technical decision-making for on-time delivery.
Deployed AI tooling for code generation, test scaffolding, and documentation, accelerating feature delivery without dropping code quality.
May 2024 – May 2025
Senior Mobile Engineer · Wio Bank
Abu Dhabi, UAE · Remote (via StatusNeo)
Led the Backoffice module team, owning development, code maintenance, and review across the full module.
Built and maintained a Retail Banking app on Flutter across Android & iOS, including secure auth (OAuth, JWT, Biometric Login) and payment gateway integration.
Shipped a Flutter Web Backoffice app for customer support with real-time issue tracking and role-based access control.
Cut flavor-build development effort by deploying Flutter Web through CI/CD.
Apr 2022 – Feb 2024
Senior Software Developer / Team Lead · Xoxoday
Bengaluru, India · Remote
Led a mobile team through the Empuls app Flutter revamp, cutting app load time by 8%.
Rolled out code versioning standards, reducing code conflicts 5% and speeding development cycles 15%.
Redesigned core UI, driving a 7% increase in user engagement.
Maintained 99.8% crash-free sessions on Crashlytics while shipping continuously.
Nov 2020 – Apr 2022
Software Engineering Manager · Jio (JioMeet)
Mumbai, India · Remote
Led Android development on India's leading meet app using Kotlin, Coroutines, and MVVM, raising code quality and app performance.
Coached and trained junior engineers, cutting process bottlenecks and lifting productivity 10%.
Restructured media resource handling, cutting video call latency 40%.
Delivered a government Android module on schedule while holding a 4.6 average Play Store rating.
May 2019 – Oct 2020
Senior Android Developer · Paytm Insider
Mumbai, India · Hybrid
Led end-to-end Android development of the Live Video module, supporting 20k+ concurrent live users.
Built a cashless payments app for large-format live events, streamlining offline F&B and merchandise transactions for OnePlus Event 2019 (30k+ offline users).
Added social login and live event search via Algolia, redesigned the homepage, and lifted conversion rates.
Implemented full test coverage with Espresso and Mockito, integrated Fabric for real-time analytics and reliability tracking.
Jan 2018 – May 2019
Senior Software Developer · Desynova
Mumbai, India · On-site
Migrated the codebase from Java to Kotlin, cutting code complexity and speeding up development.
Built Clean Architecture with MVVM from scratch, reducing bugs by 28%.
Built a custom HLS media streaming module using ExoPlayer, improving media performance.
Added offline storage and threading optimizations, cutting app load times.
Apr 2017 – Jan 2018
Android Developer · Internet Wallet (Ok$)
Yangon, Myanmar · On-site
Built an electricity and toll bill payment module covering all cities in Myanmar, lifting bill payment rates 12%.
Rebuilt the UI layer, separating business logic from UI and adding unit/integration tests to cut UI-related bugs.
Implemented Dexguard and Proguard to harden the app against reverse engineering.
Resolved 3 of 4 active user-reported issues in real time, improving app satisfaction.
Feb 2016 – Mar 2017
Android App Developer · NeaRet
Gurugram, India · On-site
Built a location-based e-commerce app from scratch, boosting retailer visibility via map-based discovery.
Introduced MVP architecture and launched both Buyer and Seller apps from zero.
Implemented marker clustering on Google Maps, improving navigation and map usability.
Audited the app for defects, identifying and fixing 15% of open issues.
Dec 2014 – Feb 2016
Android Developer · JKB Business Solutions
Gurgaon, India · On-site
Built a parking app with a rewards system, driving user retention.
Built an AR app for a publishing house with image-recognition-triggered video playback.
Delivered cross-border projects with US and Indian clients 15% faster than baseline.
Integrated push notifications, lifting user engagement 30%.
04 · Projects
Projects
Company builds and independent ventures — screenshots and live links where the product is publicly available.
Current Account
Tamara · EM-1, owns architecture & delivery
Migration effort and code review cycles cut significantly with AI-assisted tooling.
Leads a 4-developer Remittance team.
Owns top-up, withdrawal, P2P transfer, and wallet flows.
Retail Banking App
Wio Bank · Team Lead, contract via StatusNeo
Secure auth (OAuth, JWT, Biometric) + payment gateway integration on a production banking app.
Flutter Web Backoffice with real-time issue tracking and RBAC.
CI/CD cut flavor-build deployment effort.
Empuls Flutter Migration
Xoxoday · Senior Software Developer / Team Lead
8% load time cut, 99.8% crash-free sessions maintained.
Release time cut 20%, release frequency up 15%.
JioMeet
Jio · Senior Android Developer
40% latency cut via media resource restructuring.
4.6+ rating maintained at national scale.
Government compliance module delivered on time with zero defects.
Live Video & Event Payments
Paytm Insider · Senior Android Developer
Live Video module supported 20k+ concurrent users.
Cashless payments app handled 30k+ offline event transactions.
OK$ Digital Wallet
Internet Wallet · Android Developer
Built electricity and toll bill payment module across Myanmar.
Lifted bill payment rates 12%.
SMANN — Foods + Parcel
FreelanceSolo — customer, vendor, and driver apps end to end
Hyperlocal food delivery and logistics platform in Maharashtra.
500+ local businesses1L+ deliveriesLive in 3 cities
PartyWitty — Guest + Partner
FreelanceSolo — built both apps end to end
Party and event venue booking platform for Delhi NCR.
Two-sided marketplaceReal-time bookingPartner lead-gen
Redbasil — B2B Marketplace
FreelanceSolo — built the marketplace app end to end
B2B marketplace app connecting restaurants and food businesses with fresh produce and supply vendors.
B2B marketplaceiOS & Android
GoPay — Transfer & Payment
FreelanceContract — Android & Flutter (iOS)
Mobile wallet app for transfers, payments, and QRIS in Indonesia; iOS build shipped on Flutter.
Flutter · iOS & AndroidQRIS payments
Open source
Flutter-Bloc-Localization
No description provided.
NoteApp-MVVM-JetPackCompose
No description provided.
Kotlin1
GitHub05 · Blog
Notes from production — Flutter, fintech, and shipping at scale.
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06 · Skills
Toolbox
Languages
KotlinJavaDartJavaScriptPython
Mobile
Flutter (iOS & Android)Android SDKJetpack ComposeKMP
Architecture & State
Clean ArchitectureMVVMMVPBlocCubitProviderGetXRxJava
AI & Automation
GitHub CopilotClaude AILLM-assisted codingAI-driven Flutter migration
Networking & Data
REST APIsGraphQLWebSocketRetrofitDioRoomSQLiteHiveFirebase Firestore
Auth, Security & Payments
OAuth2JWTBiometric LoginRBACRazorpayStripePOS Integration
CI/CD & Testing
FastlaneGitHub ActionsJenkinsJUnitEspressoMockito
Tools & Platforms
Android StudioGitJiraAzureAWSGoogle Cloud
07 · Contact
Open to Engineering Manager roles and freelance mobile engagements — fintech and high-scale consumer products especially.
© 2026 Harsh Mittal · Riyadh, KSA